Crews working to corral the massive wildfire searing the edge of Yosemite National Park made major gains on the blaze overnight.

Still, the Rim Fire has become the fourth-largest wildfire in California's recorded history. So far it has scorched 228,670 acres--357 square miles-- since it ignited Aug. 17 in the Stanislaus National Forest.

Two out of the 10 largest California wildfires happened in Monterey County. The Marble Cone wildfire was sparked in July 1977 and the Basin Complex fire ignited in June 2008. They were both caused by lightning strikes.

Mandatory evacuations for the Rim Fire remain in effect for some south of Highway 120 and Tioga Road west of Yosemite Creek Picnic Area is closed. Crews will continue building fire lines and burning away the fire's potential fuel sources on Monday.

The 2-week-old Rim Fire moved up a spot to fourth on the state's list of large wildfires dating back to 1932 on Sunday when it grew to 351 square miles - an area larger than the cities of San Francisco, Oakland and San Jose combined, California Department of Forestry and Fire Protection spokesman Daniel Berlant said.

Meanwhile, the dense smoke that obscured Yosemite's majestic views for the first time on Saturday and prompted air quality warnings was starting to ease, park spokeswoman Kari Cobb said.

Although park officials advised visitors to avoid heavy exertion, Cobb said she has seen people outside running "and enjoying Yosemite, despite the smoke."

"The park was actually busier than I thought it would be," she said.

A 427-square-mile fire in San Diego County that killed 14 people and destroyed more than 2,800 structures a decade ago tops the list of California's largest wildfires. The Rim Fire has claimed 111 structures, 11 of them homes.